怎样写Github上的Markdown？ https://help.github.com/articles/github-flavored-markdown
#【目录】 一、前言 二、收集系统信息 三、安装node.js 四、安装Nginx 五、配置nginx以及Node.js，express.js，以及socket.io
0.收集系统信息的目的
cpu信息直接关系到nginx的配置，磁盘信息多少关系到你的文件存储，raid信息用来搞定系统稳定性问题，内存信息决定了你的应用之后要不要上redis来做缓存，memcached的配置等等.... 随着这篇文章的深入，可能还要把node与redis，node与memcached，测试，系统调优等等一系列的东西全部加进来。
1.cpu信息 http://www.cyberciti.biz/faq/linux-get-number-of-cpus-core-command/ a) nproc b) lscpu c) less /proc/cpuinfo
2.磁盘信息 df -h
yum install vim redhat-lsb -y lsb_release -a
python -V 一定要大于2.6
yum install make gcc gcc-c++
http://www.cyberciti.biz/faq/howto-linux-add-user-to-group/
useradd -m -d /home/node node usermod -a -G nobody node
http://hectorcorrea.com/blog/running-a-node-js-web-site-in-production-a-beginners-guide
https://gist.github.com/thehunmonkgroup/2042409
#!/bin/bash
#
# initd-example Node init.d
#
# chkconfig: 345 80 20
# description: Node init.d example
# processname: node
# pidfile: /var/run/initd-example.pid
# logfile: /var/log/initd-example.log
#
# Source function library.
. /lib/lsb/init-functions
NAME=initd-example # Unique name for the application
PORT=1234 # Port (in this case the application uses process.env.PORT to set the port)
INSTANCE_DIR=/var/www/$NAME # Location of the application source
SOURCE_NAME=main.js # Name os the applcation entry point script
user=apache
pidfile=/var/run/$NAME.pid
logfile=/var/log/$NAME.log
forever_dir=/var/run/forever # Forever root directory.
node=node
forever=forever
awk=awk
sed=sed
start() {
echo "Starting $NAME node instance: "
if [ "$id" = "" ]; then
# Create the log and pid files, making sure that the target use has access to them
touch $logfile
chown $user $logfile
touch $pidfile
chown $user $pidfile
# Launch the application
start_daemon
$forever start -p $forever_dir --pidfile $pidfile -l $logfile -a -d $INSTANCE_DIR $SOURCE_NAME
RETVAL=$?
else
echo "Instance already running"
RETVAL=0
fi
}
restart() {
echo -n "Restarting $NAME node instance : "
if [ "$id" != "" ]; then
$forever restart -p $forever_dir $id
RETVAL=$?
else
start
fi
}
stop() {
echo -n "Shutting down $NAME node instance : "
if [ "$id" != "" ]; then
$forever stop -p $forever_dir $id
else
echo "Instance is not running";
fi
RETVAL=$?
}
getForeverId() {
local pid=$(pidofproc -p $pidfile)
$forever list -p $forever_dir | $sed -e 's/\x1b\［0-9; ]*m//g' | $awk "\$4 == \"$pid]\" { gsub(/[\[\］/, \"\", \$1); print \$1; }"
}
id=$(getForeverId)
case "$1" in
start)
start
;;
stop)
stop
;;
status)
status -p ${pidfile}
;;
restart)
restart
;;
*)
echo "Usage: {start|stop|status|restart}"
exit 1
;;
esac
exit $RETVAL#四、【安装NGINX】
http://articles.slicehost.com/2009/2/2/centos-installing-nginx-from-source
wget http://nginx.org/download/nginx-1.3.14.tar.gz
sudo yum install pcre-devel zlib-devel openssl-devel
http://articles.slicehost.com/2009/2/2/centos-adding-an-nginx-init-script
vim /etc/init.d/nginx
#!/bin/sh
#
# nginx - this script starts and stops the nginx daemin
#
# chkconfig: - 85 15
# description: Nginx is an HTTP(S) server, HTTP(S) reverse \
# proxy and IMAP/POP3 proxy server
# processname: nginx
# config: /usr/local/nginx/conf/nginx.conf
# pidfile: /usr/local/nginx/logs/nginx.pid
# Source function library.
. /etc/rc.d/init.d/functions
# Source networking configuration.
. /etc/sysconfig/network
# Check that networking is up.
[ "$NETWORKING" = "no" ] && exit 0
nginx="/usr/local/nginx/sbin/nginx"
prog=$(basename $nginx)
NGINX_CONF_FILE="/usr/local/nginx/conf/nginx.conf"
lockfile=/var/lock/subsys/nginx
start() {
[ -x $nginx ] || exit 5
[ -f $NGINX_CONF_FILE ] || exit 6
echo -n $"Starting $prog: "
daemon $nginx -c $NGINX_CONF_FILE
retval=$?
echo
[ $retval -eq 0 ] && touch $lockfile
return $retval
}
stop() {
echo -n $"Stopping $prog: "
killproc $prog -QUIT
retval=$?
echo
[ $retval -eq 0 ] && rm -f $lockfile
return $retval
}
restart() {
configtest || return $?
stop
start
}
reload() {
configtest || return $?
echo -n $"Reloading $prog: "
killproc $nginx -HUP
RETVAL=$?
echo
}
force_reload() {
restart
}
configtest() {
$nginx -t -c $NGINX_CONF_FILE
}
rh_status() {
status $prog
}
rh_status_q() {
rh_status >/dev/null 2>&1
}
case "$1" in
start)
rh_status_q && exit 0
$1
;;
stop)
rh_status_q || exit 0
$1
;;
restart|configtest)
$1
;;
reload)
rh_status_q || exit 7
$1
;;
force-reload)
force_reload
;;
status)
rh_status
;;
condrestart|try-restart)
rh_status_q || exit 0
;;
*)
echo $"Usage: $0 {start|stop|status|restart|condrestart|try-restart|reload|force-reload|configtest}"
exit 2
esacchmod +x /etc/init.d/nginx
【Chkconfig】
Now we have the base script prepared, we need to add it to the default run levels:
sudo /sbin/chkconfig nginx on Let's check our work to confirm:
sudo /sbin/chkconfig --list nginx nginx 0:off 1:off 2:on 3:on 4:on 5:on 6:off Done.
The script will now be called on a reboot so Nginx will automatically start.
https://engineering.gosquared.com/optimising-nginx-node-js-and-networking-for-heavy-workloads http://savanne.be/articles/deploying-node-js-with-systemd/ http://blog.argteam.com/coding/hardening-node-js-for-production-part-2-using-nginx-to-avoid-node-js-load/
location / {
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Host $http_host;
proxy_set_header X-NginX-Proxy true;
proxy_pass http://127.0.0.1:3000/;
proxy_redirect off;
}
可以用servername的方式来在80端口监听多个站点....
server {
listen 80;
server_name xxx.example.com;
}
server {
listen 80;
server_name yyy.example.com;
}
```ruby